KR20160021938A - Touch sensing device - Google Patents

Abstract

Provided is a touch sensing device capable of reducing resistive-capacitive delay variations. The touch sensing device comprises: an external wiring region in which a plurality of external wires are disposed; a plurality of patch electrodes arranged in a first direction away from the external wiring region; and a plurality of internal wires disposed in a dead zone defined on one side of the patch electrodes and each having one end connected to each patch electrode and the other end connected to one of the external wires. Each of the internal wires includes: a detour wiring unit of which at least a portion extends in a direction away from the external wiring region or in a direction parallel to the external wires from one end; and a main wiring unit which extends in a direction approaching the external wiring region to the other end. The length of the detour wiring unit of a first internal wire, which is connected to a first patch electrode among the patch electrodes, is longer than the length of the detour wiring unit of a second internal wire connected to a second patch electrode, which is positioned further away from the external wiring region than the first patch electrode, among the patch electrodes.

Description

TOUCH SENSING DEVICE

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a touch sensing apparatus, and more particularly, to a touch sensing apparatus for sensing whether a user touches and /

As mobile phones equipped with touch screens have become widespread and various types of smart phones have become popular, researches on touch sensing technology are being actively carried out. The touch screen, which is a typical touch sensing device, can be divided into resistance film, electrostatic capacity, ultrasonic wave, and infrared ray according to its operation method. Among them, capacitive touch screen has advantages of durability and long life, Has recently been expanding its application field.

The capacitance type touch screen detects contact position based on the capacitance change caused by the touch of the user applied on the front of the display window, and has a high durability and supports multi-touch function, and its application range is gradually increasing.

Recently, the size of a touch screen has been increasing as a device such as a smart phone, a notebook, or the like to which the above-mentioned touch screen is applied is enlarged. As the size of the touch screen increases, a signal delay (RC DELAY) may occur between the wirings for transmitting a signal for detecting the contact position. Accordingly, the touch screen may not uniformly detect the touch .

SUMMARY OF THE INVENTION It is an object of the present invention to provide a contact sensing device with reduced signal transmission delay variation.

The present invention has been made in view of the above problems, and it is an object of the present invention to provide a method of manufacturing the same.

According to an aspect of the present invention, there is provided a touch sensing apparatus including an external wiring region in which a plurality of external wiring lines are arranged, a plurality of patch electrodes arranged in a first direction away from the external wiring region, A plurality of internal wirings arranged in a dead area defined on one side of the electrode and each having one end connected to each of the patch electrodes and the other end connected to one of the plurality of external wirings, Wherein the internal wiring includes a bypass wiring portion that extends from the one end to a direction at least partially away from the external wiring region and a main wiring portion that extends toward the external wiring region with the other end as an end point, The length of the bypass wiring portion of the first internal wiring connected to the first patch electrode among the plurality of patch electrodes is shorter than the length The length of the bypass wiring portion of the second internal wiring connected to the second patch electrode located further from the external wiring region than the first patch electrode in the tooth electrode may be longer than that of the second internal wiring.

According to another aspect of the present invention, there is provided a touch sensing apparatus including: an external wiring region in which a plurality of external wiring lines are arranged; a plurality of patch electrodes arranged in a first direction away from the external wiring region; A plurality of internal wirings, each having one end connected to each of the patch electrodes and the other end connected to any one of the plurality of external wirings, and a plurality of internal wirings arranged in the dead area defined at one side of the patch electrode, And a capacitor electrode which is insulated from the wiring and overlaps the capacitor electrode.

According to another aspect of the present invention, there is provided a touch sensing apparatus including an external wiring region in which a plurality of external wiring lines are arranged, a plurality of patch electrodes arranged in a first direction away from the external wiring region, A plurality of internal wirings each having one end connected to each of the patch electrodes and the other end connected to one of the plurality of external wirings and a plurality of internal wirings connected to one of the plurality of external wirings, And may include a capacitor electrode which is insulated from the external wiring and overlaps with the external wiring.

The details of other embodiments are included in the detailed description and drawings.

The embodiments of the present invention have at least the following effects.

According to the present invention, it is possible to provide a contact sensing device with reduced signal transmission delay variation.

The effects according to the present invention are not limited by the contents exemplified above, and more various effects are included in the specification.

1 is a view showing a schematic laminated structure of a touch sensing device according to an embodiment of the present invention.
2 is a schematic diagram illustrating a planar structure of a touch sensing apparatus according to an exemplary embodiment of the present invention.
3 is an enlarged view of a part of the touch sensing apparatus shown in Fig.
4A is an enlarged view of a portion of the touch sensing apparatus shown in FIG.
FIG. 4B is a view showing a modified embodiment of the structure shown in FIG. 4A.
5 is a schematic view showing a planar structure of a touch sensing apparatus according to another exemplary embodiment of the present invention.
6 is an enlarged view of a part of the touch sensing apparatus shown in Fig.
Fig. 7 is an enlarged view of an exemplary planar structure of the coffee setter electrode shown in Fig. 6. Fig.
8 is a schematic view illustrating a planar structure of a touch sensing apparatus according to another exemplary embodiment of the present invention.
9 is an enlarged view of a part of the touch sensing apparatus shown in Fig.
10 is a schematic view showing a planar structure of a touch sensing device according to another exemplary embodiment of the present invention.
11 is an enlarged view of a part of the touch sensing apparatus shown in Fig.

BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Is provided to fully convey the scope of the invention to those skilled in the art, and the invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification. The dimensions and relative sizes of layers and regions in the figures may be exaggerated for clarity of illustration.

Although the first, second, etc. are used to describe various components, it goes without saying that these components are not limited by these terms. These terms are used only to distinguish one component from another. Therefore, it goes without saying that the first component mentioned below may be the second component within the technical scope of the present invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. It is also to be understood that the terms " comprises "or" having ", when used in this specification, specify a feature, a number, a step, an operation, an element, a part, or a combination thereof, But do not preclude the presence or addition of steps, operations, elements, parts, or combinations thereof.

The terms spatially relative, "below", "beneath", "lower", "above", "upper" May be used to readily describe a device or a relationship of components to other devices or components. Spatially relative terms should be understood to include, in addition to the orientation shown in the drawings, terms that include different orientations of the device during use or operation. For example, when inverting an element shown in the figure, an element described as " below or beneath "of another element may be placed" above "another element. Thus, the exemplary term "below" can include both downward and upward directions. The elements can also be oriented in different directions, in which case spatially relative terms can be interpreted according to orientation.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 is a view showing a schematic laminated structure of a touch sensing device according to an embodiment of the present invention.

1, a touch sensing apparatus according to the present invention may include a substrate 100 and a conductive pattern layer 200 disposed on the substrate, and may include a window 900 disposed on the conductive pattern layer 200, As shown in FIG.

The substrate 100 may be made of a transparent material. In some embodiments, the transparent material is selected from the group consisting of reinforcing glass, acrylic resin, polyethylene terephthalate (PET), polycarbonate (PC), polyimide (PI), polyethersulfone (PES), polyimide, polymethly methacrylate (PMMA), polyethylene naphthalate ), Metal Foil, FRP (Fiber Reinforced Plastic), Silicone rubber and the like. The substrate 100 may be a high-strength substrate as well as a flexible substrate.

The conductive pattern layer 200 may be located on the substrate 100. The conductive pattern layer 200 is a layer including a plurality of conductive patterns, and the plurality of conductive patterns may be electrodes for contact detection.

The conductive pattern layer 200 may be optically transparent. Here, the meaning of optically transparent means that not only the material constituting the conductive pattern layer 200 is optically transparent but also the constituent material itself of the conductive pattern layer 200 is opaque, but the size of the constituent basic unit is very small, And cases in which they are recognized as being transparent when viewed with the naked eye as they are arranged at appropriate densities.

Examples of the material applicable to the conductive pattern layer 200 include transparent conductive oxides such as ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide) and ZO (Zinc Oxide), carbon nano materials, nano wire, A conductor such as a conductive polymer, a metal particle or metal in the form of a thin film or a mesh, and one or more of these may be applied in combination.

The carbon nanomaterial may be a single wall carbon nanotube, a multiwall carbon nanotube, a carbon nanoparticle, or a graphene.

The nanowires can be silver nanowires, copper nanowires, gold nanowires, platinum nanowires, or silicon nanowires.

Examples of the conductive polymer include polyethylene dioxythiophene (PEDOT), poly (3,4-ethylenedioxythiophene) polystyrene sulfonate, PEDOT: PSS, poly (3-alkyl) thiophene poly (3-alkyl) thiophene: P3AT, poly (3-hexyl) thiophene: P3HT, polyaniline PANI, polyacetylene polytetrafluoroethylene, polyazulene, polyisothianapthalene (PITN), polyisothianaphthene, polythienylenevinylene, polythiophene (PT), polyparaphenylene (PPP) , Polyparaphenylene vinylene (PPV), polyphenylene sulfide, polyphenylene, polyfuran, polypyrrole (PPY), polyheptadiene (polyphenylene sulfide) PHT).

The metal particles and the metal in the mesh form may include silver (Ag), aluminum (Al), copper (Cu), chromium (Cr), nickel (Ni)

The conductive pattern is provided in various shapes and can be applied to sensing and / or driving electrodes such as a patch electrode (not shown), a column electrode (not shown), an external wiring and an internal wiring (not shown) .

A transparent window 900 may be further disposed on the conductive pattern layer 200. The transparent window serves to maintain the contour of the input portion of the touch sensing device, and at least some of the regions may be exposed to the outside to receive contact input by a conductive object, such as the user's body or stylus. In addition, the transparent window 900 may serve to protect the conductive pattern in the conductive pattern layer 200. In some embodiments, the transparent window 900 may be coupled to the substrate 100 and the conductive pattern layer 200 through a transparent adhesive (not shown) or the like, but is not limited thereto. In some other embodiments, the transparent window 900 and the transparent adhesive may be omitted.

2 is a schematic diagram illustrating a planar structure of a touch sensing apparatus according to an exemplary embodiment of the present invention.

Referring to FIG. 2, the substrate 100 includes a contact sensing region 110 and an external wiring region 130 disposed outside the contact sensing region 110.

The touch sensing area 110 is a region for sensing input information generated by a user's screen touch or gesture. The touch sensing area 110 includes a plurality of column electrodes 210, a plurality of patch electrodes 230, The wiring 250 and the like may be located.

The external wiring region 130 surrounds the contact detection region 110 and includes a plurality of first external wirings 270 for transmitting a detection signal generated in the contact detection region 110, ) Can be placed. The touch sensing area 110 and the external wiring area 130 may be integrated and the external wiring area 130 may be integrated with the external wiring area 130. [ 130 may also detect user input information.

More specifically, a plurality of electrodes made of a transparent conductive pattern may be disposed in the touch sensing area 110. The plurality of electrodes may include a plurality of column electrodes 210 and a plurality of patch electrodes 230.

The plurality of column electrodes 210 may have a shape extending in the first direction (or the Y-axis direction). A plurality of column electrodes 210 are formed in a first direction (or a Y-axis direction), and the plurality of column electrodes 210 are formed in a first direction (or a Y-axis direction) It may be another shape elongated to the right side. In some embodiments, the plurality of column electrodes 210 may be used as a sensing electrode for sensing contact, but not limited thereto, and the plurality of column electrodes 210 may be used as a driving electrode.

Each of the plurality of column electrodes 210 may be electrically connected to each of the plurality of second external wirings 290. The plurality of second wirings 290 are electrically connected to the plurality of column electrodes 210 to transmit a signal sensed from the column electrodes 210 to a controller or the like and drive signals applied from a controller or the like to the column electrodes 210 ). The plurality of second external wirings 290 may be located in the external wiring region 130 as described above, but the present invention is not limited thereto. At least a part of the plurality of second external wirings 290 may be formed in the contact detection region 110).

The plurality of patch electrodes 230 are arranged adjacent to one side of the column electrodes 210 and arranged in a line along the first direction (or the Y axis direction) to form a patch electrode row. In the figure, the patch electrode row is shown to include a total of eight patch electrodes 230, that is, patch electrodes 230 located in the a-th row to the h-th row, but this is only one example. That is, the number of the patch electrodes 230 included in the patch electrode row may be variously changed as needed. On the other hand, the patch electrode row is shown on the left side with respect to one column electrode 210, but this is only one example. The patch electrodes 230 belonging to each patch electrode row may be physically spaced from each other, and may be arranged in a line with a constant pitch. When one column electrode 210 and a patch electrode column adjacent thereto are referred to as one electrode pair, the electrode pair may be repeatedly arranged in the second direction (or the X axis direction).

A dead zone may be defined at one side of the patch electrode row. Here, the dead area may refer to an area where the patch electrode 230 or the column electrode 210 is not disposed in the touch sensing area 110, so that direct input sensing can not be performed. The dead region may have a shape extending in the first direction (or the Y direction) similarly to the column electrode 210.

The position of the dead region may be opposite to the position of the column electrode 210 paired with the patch electrode row. For example, the column electrode 210, the patch electrode row (or a plurality of patch electrodes arranged in the first direction), and the dead region may be sequentially arranged in the second direction (or the X axis direction). For example, in the case where the plurality of patch electrodes 230 arranged in the first direction or the column electrodes 210 are positioned on the right side of the patch electrode row as shown in the figure, the dead region may be located on the left side of the patch electrode row have. When a plurality of patch electrodes 230 or patch electrode columns arranged in the first direction (or Y-axis direction) are positioned on the left side of the column electrodes 210 with respect to the column electrodes 210 as shown in the drawing , And the dead region may be located on the right side of the column electrode 210. However, this is only an example, and the position of the dead zone may be changed as needed.

A plurality of internal wirings 250 may be positioned in the dead zone. The plurality of internal wirings 250 may transmit a signal sensed by the patch electrode 230 to a controller or transmit a driving signal applied from a controller or the like to the patch electrode 230. One end of each of the plurality of internal wirings 250 may be connected to each of the plurality of patch electrodes 230 and the other end of each of the plurality of internal wirings 250 may be connected to each of the plurality of first external wirings 270. A more detailed description of the plurality of internal wirings 250 will be described later.

In some embodiments, one patch electrode 230 and a portion of the column electrode 210 adjacent thereto (a portion in the same position in the second direction (or X-axis direction) with the one patch electrode) The area SC can be formed. For example, as shown in the figure, one patch electrode 230 and a part of the column electrode 210 located on the right side of the one patch electrode 230 may form a pair of unit sensing areas SC have.

The unit sensing areas SC may be arranged in a matrix shape. Illustratively, eight patch electrodes 230 are arranged in the first direction (or Y axis direction), seven column electrodes 210 and seven patch electrodes 210 are arranged in the second direction (or X axis direction) 230 are arranged in this order. In this case, the unit sensing area SC may constitute a 7 x 8 matrix. However, this is only one example for convenience of explanation, and the number and arrangement of the unit sensing areas SC can be variously changed.

A plurality of first external wirings 270 and a plurality of second external wirings 290 may be disposed in the external wiring region 130. The plurality of first external wirings 270 and the plurality of second external wirings 290 may extend along the second direction (or the X-axis direction) and may be arranged in parallel with each other. A plurality of first external wirings 270 and a plurality of second external wirings 290 may be connected to the controller 250. One end of the internal wiring 250 is connected to the patch electrode 230, Is connected to the first external wiring 270. The different patch electrodes 230 are connected by different internal wirings 210. The other ends of the internal wirings 210 connected to the patch electrodes 210 located on the same row may be connected to the same external wiring 270. The other ends of the internal wirings connected to the patch electrodes 270 located in different rows may be connected to external wirings 270 that are different from each other.

The internal wirings 250 connected to the patch electrode row are physically separated from each other without crossing or contacting with each other. For this purpose, the internal wiring 250 connected to the patch electrode of a relatively higher row among the plurality of patch electrodes 230 located in one patch electrode row (for example, the patch electrode of row a) is farther from the external wiring region 130 (For example, a row electrode of a row b) of the lower row where the row electrodes are located. That is, the internal wiring connected to the patch electrode of the lower row can surround the outside of the internal wiring connected to the upper row patch electrode.

The internal wiring 250, the first external wiring 270, and the second external wiring 290 may be made of a conductive material. Examples of the conductive material include transparent conductive oxides such as ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide) and ZO (zinc oxide), conductive materials such as carbon nanomaterials, nanowires, conductive polymers, Or metal particles in the form of a mesh or metal, and one or more of these may be applied in combination. Also, in some embodiments, the inner wiring 250, the first outer wiring 270, and the second outer wiring 290 may be optically transparent. At least one of the internal wiring 250, the first external wiring 270 and the second external wiring 290 may be formed of the same material as at least one of the column electrode 230 and the patch electrode 250 .

Fig. 3 is an enlarged view of a part of the touch sensing apparatus shown in Fig. 2, and more specifically, a view showing part A of Fig. 2 in an enlarged scale.

A plurality of internal wirings 250 and a plurality of first external wirings 270 will be described with reference to Figs. 2 to 3. Fig.

Hereinafter, for convenience of explanation, among the plurality of patch electrodes 230 included in one patch electrode row, the first row of patch electrodes 230a, the row b patch electrodes are referred to as second patch electrodes 230b, the patch electrode in row c is referred to as a third patch electrode 230c, and the patch electrode in row d is referred to as a fourth patch electrode 230d.

The internal wiring connected to the first patch electrode 230a among the plurality of internal wirings 250 is connected to the first internal wiring 251 and the second internal wiring 252 connected to the second patch electrode 230b, The internal wiring connected to the third patch electrode 230c is referred to as a fourth internal wiring 254 and the internal wiring connected to the third internal wiring 253 and the fourth patch electrode 230d is referred to as a fourth internal wiring 254. [

The first external wiring connected to the first internal wiring 251 among the plurality of first external wiring 270 is connected to the first external wiring connected to the first sub external wiring 271 and the second internal wiring 253 The first external wiring connected to the second sub external wiring 273 and the third internal wiring 255 is referred to as a third sub external wiring 275 and the first external wiring connected to the fourth internal wiring 257 is referred to as a fourth sub external Is called a wiring 277. The distances from each of the plurality of patch electrodes 230 belonging to the patch electrode row to the external wiring region 130 are different from each other. That is, the plurality of patch electrodes 230 belonging to one patch electrode row are farther from the external wiring region 130 as the alphabetical order of the rows is increased. For example, the second patch electrode 230b positioned on the b-th row from the first patch electrode 230a located on the row a is located farther from the external wiring region 130, The third patch electrode 230c located at the farthest from the external wiring region 130 is located farther away. Similarly, the fourth patch electrode 230d located at the d-th row is located farther from the external wiring region 130 than the third patch electrode 230c. If each internal wiring is connected at the shortest distance in the dead zone DZ between the patch electrode and the external wiring, the length of each internal wiring will be different depending on the position of the patch electrode. For example, the length of the internal wiring connected to the first patch electrode 230a located in the row a is the shortest, and the length of the internal wiring connected to the patch electrode becomes longer as it goes to the bottom row of the row a.

Assuming that the widths of the first to fourth internal wirings 251, 253, 255 and 257 are the same, when the lengths of the first to fourth internal wirings 251, 253, 255 and 257 are different, 253, 255, and 257 of the first to fourth internal wirings 251, 253, 255, and 257 are different from each other, delay variation occurs. Since the product of the resistance value and the capacitance value of each internal wiring is directly related to the delay time of signal transmission. If RC delay deviation occurs, smooth contact input detection may not be performed, and noise may be determined when a contact input is detected.

According to the present invention, in order to prevent such an RC delay deviation from occurring, the internal wirings are bypassed by connecting the patch electrodes and the external wirings differently at the shortest distance, and connected by different positions.

More specifically, each of the first to fourth internal wirings 251, 253, 255, and 257 is provided with bypass wiring portions 251a and 253a (at least part of which starts from one end in the direction away from the external wiring region 130) 255b and 257b extending in the direction of approaching the external wiring region 130 with the other end as an end point. The main wiring portion 251b, 253b, 255b,

The bypass wiring portions 251a, 253a, 255a, and 257a and the main wiring portions 251b, 253b, 255b, and 257b may be continuous. The boundaries P1, P2, P3 and P4 which are continuous points of the bypass wiring portions 251a, 253a, 255a and 257a and the main wiring portions 251b, 253b, 255b and 257b are separated from the external wiring region 130 in the first direction (Or in the Y-axis direction). 253a, 255a, and 257a and the main wiring portions 251b, 251b, and 253a are provided in the case where a plurality of the maximum distance points farthest from the external wiring region 130 in the first direction (or the Y- The boundaries P1, P2, P3 and P4 of the plurality of patch electrodes 253a, 253b, 255b and 257b from the first to fourth patch electrodes 230a, 230b, 230c and 230d in the second direction Direction) at the farthest distance.

In some embodiments, each of the main wiring portions 251b, 253b, 255b, and 257b travels from the most distant point (P1, P2, P3, P4) to the other end. That is, in some embodiments, the main wiring portions 251b, 253b, 255b, and 257b may be formed in a linear shape.

The bypass wiring portions 251b, 253b, 255b and 257b are connected to the first to fourth internal wirings 251, 253, 255 and 257 connected to the first to fourth patch electrodes 230a, 230b, 230c and 230d, Proceed from one end to the most distant point (P1, P2, P3, P4). The distance from the external wiring region 130 to one end of each of the first to fourth internal wirings 251, 253, 255 and 257 is the distance from the external wiring region 130 to the most distant points P1, P2, P3 and P4 It is bigger than the street. Therefore, the bypass wiring portions 251b, 253b, 255b, and 257b may include a portion extending in a direction away from the external wiring region 130. [ However, it is not necessary that all sections of the bypass wiring portions 251b, 253b, 255b, and 257b move in the direction away from the external wiring region 130. [ For example, the bypass wiring portions 251b, 253b, 255b, and 257b may include a section that moves in the second direction (or the X-axis direction). Furthermore, although not shown in the drawings, a part of the bypass wiring portions 251b, 253b, 255b, and 257b may be moved in a direction approaching the external wiring region 130. [ In this case, the length of the portion away from the external wiring region 130 will become longer. The bypass wiring portion 257a located farthest from the external wiring region 130 among the bypass wiring portions 251b, 253b, 255b, and 257b is moved in a direction away from the external wiring region 130 as shown in the figure And may include only a portion moving in the second direction (or the X-axis direction).

At least one of the bypass wiring portion bypass wiring portions 251b, 253b, 255b, and 257b may include a plurality of straight portions and at least one bending portion defined therebetween. The bending portion changes the direction of travel. In the figure, in the case of the first internal wiring to the third internal wiring 251, 253, and 255, two row direction linear sections and one column direction (direction away from the external wiring area) And a bent portion is formed between each straight line section, so that the bypass wiring portion includes a total of two bent portions. The bent portion is formed even where the bypass wiring portion and the main wiring portion meet.

the patch electrode in the d row, that is, the bypass wiring portion 257b connected to the fourth patch electrode 230d, may include only the row straight line section without the bent portion.

The internal wiring (illustratively, the first internal wiring 251) connected to the patch electrode (illustratively, the first patch electrode 230a) of the upper row is connected to the patch electrode (illustratively, the second patch electrode 230b) And may be located inside the main wiring portion (illustratively, the main wiring portion 253b of the second internal wiring) of the internal wiring (illustratively, the second internal wiring 253). Therefore, the length of the main wiring portion (illustratively, the main wiring portion of the first internal wiring, 251b) of the upper row internal wiring is equal to the length of the main wiring portion (exemplarily, the main wiring portion of the second internal wiring) As shown in FIG. In this case, the length of the bypass wiring portion (illustratively, the bypass wiring portion of the first internal wiring) 251a of the upper row internal wiring is set to be the bypass wiring portion (the bypass wiring portion of the second internal wiring, for example) ), The total length of the upper row internal wiring (illustratively, the first internal wiring 251) and the total length of the lower row internal wiring (illustratively, the second internal wiring 253) can be adjusted equally . As described above, when the lengths of the internal wirings are substantially uniformly adjusted, the total resistance value of the internal wirings becomes uniform, thereby preventing noise due to uneven RC delay.

FIG. 4A is an enlarged view of a part of the touch sensing apparatus shown in FIG. 3, more specifically, an enlarged view of a portion B in FIG. 3, and FIG. 4B shows a modification of the structure shown in FIG. Fig.

Referring to FIGS. 3 to 4B, a plurality of internal wirings (230 in FIG. 3) according to the present invention may be formed in a mesh shape. As shown in FIG. 4A, at least two metal lines are arranged in a diagonal direction with respect to a first direction (or a Y-axis direction), and the first inner wiring (251 in FIG. 3) It can have a repeating mesh shape. The shape in which the at least two straight lines are repeatedly combined and separated may have a rectangular shape as shown in FIG. 4A, but the present invention is not limited thereto. Alternatively, as shown in FIG. 4B, the edge may have a curved shape have. When the plurality of internal wirings (230 in Fig. 3) are formed in a mesh shape, an advantage that the plurality of internal wirings (230 in Fig. 3) can be more effectively prevented from being visually recognized, Lt; / RTI >

FIG. 5 is a view schematically showing a planar structure of a touch sensing apparatus according to another exemplary embodiment of the present invention, FIG. 6 is an enlarged view of a part of the touch sensing apparatus shown in FIG. 5, 5 is an enlarged view of a portion A of FIG. The touch sensing apparatus according to the present embodiment may include a capacitor electrode unlike the touch sensing apparatus shown in FIG. Other configurations are the same as or similar to those of the above-described contact sensing device in the description of Figs. 2 to 4B, and the differences will be mainly described for convenience of explanation.

Referring to FIGS. 5 and 6, the touch sensing apparatus according to the present embodiment may further include a plurality of capacitor electrodes 310 for RC delay compensation.

More specifically, the capacitor electrode 310 serves to compensate for the RC delay deviation caused by the minute difference in length of each internal wiring 250.

The capacitor electrode 310 may be located in the contact sensing region 110 and may be formed by forming each internal wiring 250 and a capacitor to compensate for the difference in RC delay caused by the length difference of each of the internal wiring 250 can do. The capacitance value can be adjusted by adjusting the overlapping area between the internal wiring 250 and the capacitor electrode 310, thereby making the RC delay of each internal wiring 250 uniform.

The capacitor electrode 310 may be disposed to overlap the internal wiring 250 and in some embodiments the capacitor electrode 310 may be located at the top or bottom of the internal wiring 250. [

The capacitor electrode 310 may be insulated from the internal wiring 250.

In some embodiments, the capacitor electrode 310 may be a floating electrode. That is, the capacitor electrode 310 may not be provided with a separate voltage from the outside.

The capacitor electrode 310 may be made of a conductive material, and in some embodiments, the capacitor electrode 310 may be optically transparent. Examples of the material applicable to the capacitor electrode 310 include transparent conductive oxides such as ITO (Indium Tin Oxide), IZO (Indium Zinc Oxide) and ZO (Zinc Oxide), carbon nano materials, nano wire, A polymer or the like, a thin film or a metal particle in the form of a mesh or a metal, and one or more of these may be applied in combination.

The capacitor electrode 310 may be located in the dead region DZ of the contact sensing region 110 and overlap the internal wiring 250.

Hereinafter, for convenience of explanation, a capacitor electrode which overlaps with the first internal wiring 251 is referred to as a first capacitor electrode 311, and a capacitor electrode which overlaps with the second internal wiring 253 is referred to as a second The capacitor electrode overlapping with the capacitor electrode 313 and the third internal wiring 255 is referred to as a third capacitor electrode 315 and the capacitor electrode overlapping with the fourth internal wiring 257 is referred to as a fourth capacitor electrode 317 .

According to this embodiment, each of the first to fourth capacitor electrodes 311, 313, 315, and 317 may be physically separated from each other and electrically insulated from each other.

Assuming that the widths of the first internal wirings to the fourth internal wirings 251, 253, 255 and 257 are all the same and the length of the first internal wirings 251 is shorter than the length of the second internal wirings 253, The resistance R1 of the first internal wiring 251 is smaller than the resistance R2 of the second internal wiring 253. [ That is, R1 <R2. In this case, the capacitance C1 between the first capacitor electrode 311 and the first internal wiring 251 is larger than the capacitance C2 between the second capacitor electrode 313 and the second internal wiring 253 in order to compensate for the difference in RC delay Should have a larger value. In other words, the relationship of C1> C2 is required to reduce the RC delay deviation. The overlapping area between the first capacitor electrode 311 and the first internal wiring 251 may be larger than the overlapping area between the second capacitor electrode 313 and the second internal wiring 253. [ The area where each of the first to fourth capacitor electrodes 311, 313, 315 and 317 overlap with the first to fourth internal wirings 251, 253, 255 and 257 is the first to fourth internal wirings 251, 253, 255, 257).

The shape of each of the first to fourth capacitor electrodes 311, 313, 315, and 317 is not limited. In FIGS. 5 and 6, each of the first to fourth capacitor electrodes 311, 313, 315, and 317 is illustrated as being formed in a rectangular shape, but this is only one example. In addition, the shape of each of the first to fourth capacitor electrodes 311, 313, 315, and 317 may be various shapes such as polygonal, semicircular, circular, or a combination thereof. Further, the shape of each of the first to fourth capacitor electrodes 311, 313, 315, and 317 may be different from each other. In the figure, one capacitor electrode (illustratively, the first capacitor electrode 311) is shown as being overlapped with one internal wiring (illustratively, the first internal wiring 251), but this is only one example, A plurality of capacitor electrodes overlapping one internal wiring may be provided.

5 and 6, the internal wiring 250 includes a bypass wiring portion and a main wiring portion similarly to the contact sensing apparatus shown in FIGS. 2 and 3 You may.

More specifically, each of the first to fourth internal wirings 251, 253, 255, and 257 has bypass wiring portions 251a, 253a, 255a, and 255a extending from one end to at least a portion in a direction away from the external wiring region 130, 257a and 257b and 253b, 253b, 255b, and 257b extending in the direction toward the external wiring region 130 with the other end as an end point. In this case, the resistance value of each of the first to fourth internal wirings 251, 253, 255, and 257 and the resistance value of each of the first to fourth capacitor electrodes 311, 313, 315, and 317, It is possible to reduce the RC delay deviation between the respective internal wirings by adjusting all of the capacitance values formed by the first to third delay lines 251, 253, 255, and 257.

FIG. 7 is an enlarged view of a part of the touch sensing apparatus shown in FIG. 6, and more specifically, an enlarged view of a first capacitor electrode.

Referring to FIG. 7, the capacitor electrodes (illustratively, the first capacitor electrodes 311) of the touch sensing device according to the present embodiment are arranged such that the metal lines cross each other in the first direction (or the Y axis direction) And may have a mesh shape including an overlapped shape. In the case where the capacitor electrodes are formed in a mesh shape in this way, it is possible to prevent the occurrence of moire phenomenon due to interference even when the capacitor electrodes and the internal wiring are arranged so as to overlap with each other.

8 is a view schematically showing a planar structure of a touch sensing device according to another exemplary embodiment of the present invention, and FIG. 9 is an enlarged view of a part of the touch sensing device shown in FIG. 8, 8 is an enlarged view of a portion A in Fig.

8 and 9, unlike the touch sensing apparatus shown in FIGS. 5 and 6, the touch sensing apparatus according to the present embodiment is located in one dead zone DZ and overlaps each internal wiring 250 There is a difference in that the capacitor electrode 330 is integrally formed.

In other words, the capacitor electrode 330 of the touch sensing device according to the present embodiment can be formed integrally with the capacitor electrode 330, and the capacitor electrode 330 is electrically connected to the first internal wiring 251, the second internal wiring 253, The first internal wiring 255 and the fourth internal wiring 257 overlap each other. In some embodiments, the area where the capacitor electrode 330 overlaps with the first to fourth internal wirings 251, 253, 255, and 257 is the length of the first to fourth internal wirings 251, 253, 255, and 257 . &Lt; / RTI &gt;

Other configurations are the same as or similar to those of the above-described contact sensing device in the description of Figs. 5 and 6, and a detailed description thereof will be omitted.

FIG. 10 is a schematic view showing a planar structure of a touch sensing apparatus according to another exemplary embodiment of the present invention, and FIG. 11 is an enlarged view of a part of the touch sensing apparatus shown in FIG. 10, 10 is an enlarged view of a portion A in Fig.

The contact sensing device according to the present embodiment differs from the contact sensing device shown in Figs. 5 and 6 in the capacitor electrode formation positions. The rest of the configuration is the same as or similar to the touch sensing apparatuses described in Figs. 5 to 7, and the difference will be mainly described for convenience of explanation.

10 and 11, the touch sensing apparatus according to the present embodiment is different from the touch sensing apparatus shown in FIGS. 5 and 6, and is located in the external wiring region 130 and overlaps with the first external wiring 270 And the capacitor electrode 350 is formed integrally.

The capacitor electrode 350 has an RC delay deviation caused by a minute difference in length of each internal wiring 250 and an RC delay deviation due to a difference in position of a connecting portion between each internal wiring 250 and each first external wiring 270 It plays a role of compensation.

The capacitor electrode 350 may be located in the external wiring region 130 and may form a capacitor with the first external wiring 270. The capacitance value can be adjusted by adjusting the overlapping area between each of the first external wirings 270 and the capacitor electrode 350, thereby making the RC delay uniform.

The capacitor electrode 350 may be disposed to overlap the first outer wiring 270 and in some embodiments the capacitor electrode 350 may be located at the top or bottom of the first outer wiring 270. [

The capacitor electrode 350 may be insulated from the first external wiring 270.

In some embodiments, the capacitor electrode 350 may be a floating electrode. That is, the capacitor electrode 350 may not be provided with a separate voltage from outside.

Hereinafter, for convenience of explanation, the capacitor electrode overlapping the first sub-outer wiring line 271 connected to the first inner wiring line 251 is referred to as a first capacitor electrode 351 and the second inner wiring line The second capacitor electrode 353 overlapped with the second sub-outer wiring line 273 connected to the third sub-wiring line 253 and the third sub-outer wiring line 275 connected to the third internal wiring 255, The third capacitor electrode 355 and the capacitor electrode overlapping the fourth sub-external wiring 277 connected to the fourth internal wiring 257 are referred to as a fourth capacitor electrode 357.

Each of the first to fourth capacitor electrodes 351, 353, 355, and 357 may be physically separated from each other and electrically insulated from each other.

Assuming that the widths of the first internal wirings to the fourth internal wirings 251, 253, 255 and 257 are all the same and the length of the first internal wirings 251 is shorter than the length of the second internal wirings 253, The resistance R1 of the first internal wiring 251 has a smaller value than the resistance R2 of the second internal wiring 253. That is, R1 <R2. An RC delay deviation may be generated for each of the internal wirings 251, 253, 255, and 257 when signals are transmitted through the internal wirings 251, 253, 255, and 257. The capacitance C3 between the first capacitor electrode 351 and the first sub external wiring 271 is larger than the capacitance C4 between the second capacitor electrode 353 and the second sub external wiring 273 in order to compensate for the RC delay deviation It should have a large value. That is, the relation of C3> C4 can reduce the RC delay deviation. The overlap area between the first capacitor electrode 351 and the first sub external wiring 271 may be larger than the overlap area between the second capacitor electrode 353 and the second sub external wiring 273. [ The areas where the first to fourth capacitor electrodes 351, 353, 355, and 357 overlap with the first to fourth sub-external wirings 271, 273, 275, and 277, respectively, (251, 253, 255, 257).

Although not shown in the drawing, the capacitor electrode 350 may be formed integrally similar to the capacitor electrode 330 shown in FIGS. 8 and 9 (FIG. 8). That is, the area of the capacitor electrode 350 where the first sub-outer wiring 271, the second sub-outer wiring 273, the third sub-outer wiring 275 and the fourth sub-outer wiring 277 overlap may be different from each other have. In some embodiments, the area where the capacitor electrode 350 overlaps with the first to fourth sub-external wirings 271, 273, 275, and 277 is the area of the first to fourth internal wirings 251, 253, 255, It can be inversely proportional to length.

In addition, the touch sensing apparatus according to the present embodiment may include a bypass wiring portion and a main wiring portion as shown in FIGS. 10 and 11.

More specifically, each of the first to fourth internal wirings 251, 253, 255, and 257 has bypass wiring portions 251a, 253a, 255a, and 255a extending from one end to at least a portion in a direction away from the external wiring region 130, 257a and 257b and 253b, 253b, 255b, and 257b extending in the direction toward the external wiring region 130 with the other end as an end point. In this case, the resistance value of each of the first to fourth internal wirings 251, 253, 255, and 257 and the resistance values of the first to fourth capacitor electrodes 311, 313, 315, and 317, It is also possible to reduce the RC delay deviation between the respective internal wirings by adjusting all of the capacitance values formed by the wirings 271, 273, 275, and 277.

Although not shown in the drawing, the touch sensing apparatus according to the present embodiment may further include another capacitor electrode (310 in FIG. 5) on the internal wiring 250 as shown in FIGS. 5 to 6 have.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, You will understand. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

Claims (20)

An external wiring region in which a plurality of external wiring lines are arranged;
A plurality of patch electrodes arranged in a first direction away from the external wiring region; And
A plurality of internal wirings arranged in the dead area defined on one side of the plurality of patch electrodes, each of the plurality of internal wirings including one end connected to each of the patch electrodes and the other end connected to any one of the plurality of external wirings However,
Wherein each of the internal wirings has a detour wiring part at least a part of which extends away from the external wiring area starting from the one end or in a direction parallel to the plurality of external wirings, And a main wiring portion extending in the direction of the main wiring,
Wherein a length of a bypass wiring portion of a first internal wiring connected to a first patch electrode of the plurality of patch electrodes is equal to or greater than a length of a bypass wiring portion connected to a second patch electrode located further from the external wiring region than the first patch electrode among the plurality of patch electrodes 2 A contact sensing device that is longer than the bypass wiring part of the internal wiring. The method according to claim 1,
Wherein a length of a main wiring portion of the second internal wiring is longer than a length of a main wiring portion of the first internal wiring. 3. The method of claim 2,
Wherein the length of the first internal wiring and the length of the second internal wiring are mutually the same. The method according to claim 1,
Wherein the main wiring portion is continuous with the bypass wiring portion,
Wherein the boundary between the main wiring portion and the bypass wiring portion is the farthest point from the external wiring region in the internal wiring. The method according to claim 1,
The bypass wiring portion
And at least one bend. The method according to claim 1,
And a capacitor electrode which is insulated from and overlapped with the plurality of internal wirings. The method according to claim 6,
Wherein the capacitor electrode is a floating electrode. The method according to claim 6,
Wherein the capacitor electrode comprises:
A touch sensing device in mesh form. The method according to claim 6,
Wherein the capacitor electrode comprises:
A first capacitor electrode overlapping the first internal wiring, and a second capacitor electrode overlapping the second internal wiring,
Wherein an area where the first internal wiring and the first capacitor electrode overlap is larger than an area
And the second internal electrode and the second capacitor electrode are overlapped with each other. The method according to claim 6,
Wherein the plurality of capacitor electrodes are electrically insulated from each other. 11. The method of claim 10,
Wherein the capacitor electrode comprises one body. The method according to claim 1,
And a capacitor electrode which is insulated from and overlapped with the plurality of external wirings. The method according to claim 1,
Wherein each of the plurality of internal wirings includes one or more bent portions. 14. The method of claim 13,
Wherein at least one of the plurality of internal wirings has a mesh shape. An external wiring region in which a plurality of external wiring lines are arranged;
A plurality of patch electrodes arranged in a first direction away from the external wiring region;
A plurality of internal wirings arranged in the dead region defined at one side of the plurality of patch electrodes, each internal wiring having one end connected to each of the patch electrodes and the other end connected to any one of the plurality of external wirings; And
And a capacitor electrode which is insulated from and overlapped with the plurality of internal wirings. 16. The method of claim 15,
Wherein the capacitor electrode comprises:
A contact sensing device which is a floating electrode. 16. The method of claim 15,
Wherein the capacitor electrode comprises:
A touch sensing device in mesh form. An external wiring region in which a plurality of external wiring lines are arranged;
A plurality of patch electrodes arranged in a first direction away from the external wiring region;
A plurality of internal wirings, each having one end connected to each of the patch electrodes and the other end connected to any one of the plurality of external wirings, the plurality of internal wirings disposed in a dead region defined on one side of the plurality of patch electrodes; And
And a capacitor electrode which is insulated from and overlapped with the plurality of external wirings. 19. The method of claim 18,
Wherein the capacitor electrode comprises:
A contact sensing device which is a floating electrode. 19. The method of claim 18,
Wherein the capacitor electrode comprises:
A touch sensing device in mesh form.

Images